docs: def _get_aggregated_info(self):
          """
          Keeps track of aggregated info in a dictionary called self.aggregated_info
          """
          agg_results = {}
          for key in self.aggregated_info['occurrences']:
              agg_results[key] = {
                  'occurrences': self.aggregated_info['occurrences'].get(key),
                  'coverage': (float(self.aggregated_info['occurrences']
                                     .get(key))/float(self.get_metadata('items_count')))*100
              }
          return agg_results